Air inlet phase continuously adjustable device for single-cylinder and single-overhead-camshaft engine

Abstract

The invention discloses an air inlet phase continuously adjustable device for a single-cylinder and single-overhead-camshaft engine. The air inlet phase continuously adjustable device comprises a cylinder cover (1), a phase adjuster assembly (2), an air exhaust camshaft (3) and an air inlet camshaft (4), wherein the right side of a chain wheel chamber (11) is provided with a camshaft support boss (12); the phase adjuster assembly (2) is arranged in the chain wheel chamber (11), and is supported through a first bearing seat (13); the air exhaust camshaft (3) and the air inlet camshaft (4) can rotate relatively; and the camshaft support boss (12) is provided with a first oil supply hole (16) and a second oil supply hole (17). The phase adjuster assembly is arranged in the space of the chain wheel chamber of the cylinder cover, so that the limit of the spatial structure of the cylinder cover when the phase adjuster assembly is arranged between air inlet and exhaust cams is avoided, and the arrangement of a vane type continuously variable air distribution mechanism can be realized under the condition of slightly changing the engine cylinder cover.

Description

technical field [0001] The invention relates to a gas distribution mechanism of an engine, in particular to a continuously adjustable intake phase device for a single-cylinder single overhead camshaft engine. Background technique [0002] At present, the multi-cylinder gasoline engines of many automobile enterprises at home and abroad are increasingly using variable valve timing (VVT, Variable Valve Timing). Installing variable valve timing systems on multi-cylinder gasoline engines can effectively Improving engine power and reducing fuel consumption and emissions are currently one of the mainstream technologies for multi-cylinder gasoline engines. There are many mechanisms that can realize variable valve timing, among which the vane-type continuously variable valve timing mechanism is the most widely used. Various engines of many domestic automobile companies are equipped with this technology, and other automobile companies are also equipped with this technology. In the ra...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems of limited space and difficult arrangement of vane-type variable valve timing mechanisms on some single-cylinder single-overhead camshaft engines, and proposes a single-cylinder single-overhead camshaft engine with continuous and adjustable intake phases. Adjusting device, which can realize the continuous adjustment of the intake phase, and can reasonably use the space of the cylinder head sprocket chamber to arrange the phase adjuster assembly, avoiding the arrangement of the phase adjuster assembly between the intake and exhaust cams The time is limited by the space structure of the cylinder head, and the arrangement of the vane-type continuously variable valve train can be realized with a small change to the engine cylinder head, so as to expand the application field of VVT technology

Images